#include <iostream>
#include <stdlib.h>

void swap(int *a,int *b)
{
    int temp;
    temp=*a;
    *a=*b;
    *b=temp;
}
using namespace std;
int main(){
    cout<<"this is a C++ program!\n";
    int i=3,j=5;
    swap(&i,&j);
    cout <<i<<","<<j<<endl;
    system("pause");
    return 0;
}
